Method and System to Reduce Peak to Average Power Ratio in Multi-Carrier Modulation Receivers

1. A method for performing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the method comprising: assigning one of a set of non-arbitrary reserved tone values to a reserved tone channel carrier based on a predetermined peak-to-average-power ratio (PAPR) threshold; producing a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and performing the channel estimation based on the reserved tone channel carrier.

2. The method of claim 1 , wherein the set of non-arbitrary reserved tone values comprises at least a subset of pilot tone values.

3. The method of claim 1 , wherein the channel estimation is performed in a receiver configured to receive the OFDM signal.

4. An apparatus for use in performing channel estimation in an orthogonal frequency multiplexing (OFDM) system, comprising: a receiver module configured to: receive an OFDM signal including a reserved tone channel carrier; perform the channel estimation based on one of a set of non-arbitrary reserved tone values assigned to the reserved tone channel carrier, the one of the set of non-arbitrary reserved tone values being assigned to the reserved tone channel carrier based on a predetermined peak-to-average-power ratio (PAPR) threshold; and produce a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values.

5. An apparatus for performing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the apparatus comprising: means for assigning one of a set of non-arbitrary reserved tone values to a reserved tone channel carrier based on a predetermined peak-to-average-power ratio (PAPR) threshold; means for producing a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and means for performing the channel estimation based on the reserved tone channel carrier.

6. A non-transitory computer readable medium carrying one or more sequences of one or more instructions for execution by one or more processors to perform a method for providing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the instructions when executed by the one or more processors, cause the one or more processors to: assign one of a set of non-arbitrary reserved tone values to a reserved tone channel carrier based on a predetermined peak-to-average-power ratio (PAPR) threshold; produce a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and perform the channel estimation based on the reserved tone channel carrier.

7. A method for performing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the method comprising: determining a set of non-arbitrary reserved tone values; assigning tone values from the set of non-arbitrary reserved tone values to non-pilot channel carriers based on a predetermined peak-to-average-power ratio (PAPR) threshold; producing a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and using the non-pilot channel carriers to perform the channel estimation.

8. The method of claim 7 , wherein the set of non-arbitrary reserved tone values comprises at least a subset of pilot tone values.

9. The method of claim 7 , wherein the channel estimation is performed in a receiver configured to receive the OFDM signal.

10. An apparatus for performing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the apparatus comprising: means for determining a set of non-arbitrary reserved tone values; means for assigning tone values from the set of non-arbitrary reserved tone values to non-pilot channel carriers based on a predetermined peak-to-average-power ratio (PAPR) threshold; means for producing a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and means for using the non-pilot channel carriers to perform the channel estimation.

11. A non-transitory computer readable medium carrying one or more sequences of one or more instructions for execution by one or more processors to perform a method for providing channel estimation for an Orthogonal Frequency Division Multiplexed (OFDM) signal, the instructions when executed by the one or more processors, cause the one or more processors to: determine a set of non-arbitrary reserved tone values; assign tone values from the set of non-arbitrary reserved tone values to non-pilot channel carriers based on a predetermined peak-to-average-power ratio (PAPR) threshold; produce a second set of non-arbitrary reserved tone values by filtering the set of non-arbitrary reserved tone values; and use the non-pilot channel carriers to perform the channel estimation.

12. The non-transitory computer readable medium of claim 11 , wherein the set of non-arbitrary reserved tone values comprises at least a subset of pilot tone values.

13. The method of claim 1 , further comprising dynamically determining the set of non-arbitrary reserved tone values during an initialization.

14. The method of claim 1 , further comprising assigning one of the second set of non-arbitrary reserved tone values to a second reserved tone channel carrier based on the predetermined PAPR threshold.